Joakim Gustafsson

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A widely used method for finding places to take turn in spoken dialogue systems is to assume that an utterance ends where the user ceases to speak. Such endpoint detection normally triggers on a certain amount of silence, or non-speech. However, spontaneous speech frequently contains silent pauses inside sentence-like units, for example when the speaker(More)
In this paper, we extend PMON, a logic for reasoning about action and change, with causal rules which are used to specify the indirect eeects of actions. The extension, called PMON(RCs), has the advantage of using explicit time, includes actions with durations , nondeterministic actions, allows partial speciication of the timing and order of actions and has(More)
We have shown that the elimination algorithm (DLS) for reducing second-order logic to rst-order logic by Doherty, Lukaszewicz and Szalas, can be implemented. In order to make the algorithm eecient when more than one predicate is eliminated some changes are suggested. The DLS algorithm requires the input to be transformed into disjunctive form, however it(More)
In this paper, we extend PMON, a logic for reasoning about action and change, with causal rules which are used to specify the indirect eeects of actions. The extension, called PMON(RCs), has the advantage of using explicit time, includes actions with durations , nondeterministic actions, allows partial speciication of the timing and order of actions and has(More)
In this paper we will describe the natural language and dialog component in the Waxholm system. Our parser, STINA, is knowledge based and is designed as a pro-babilistic language model. The dialog management, also implemented in STINA, is based on grammar rules and lexical semantic features. The parser is running with two different time scales corresponding(More)
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